This listing is for a onesie from Victoria's Secret PINK Collection.  It is a black thermal and has a white, green and red fair isle nordic print.  There is a snap flap in the back.  It is new without tags.  NOTE: This runs smaller, I will list the measurements below for each size.  This was bought in 2016 and rare/hard to find.

SIZE S 15 inches underarm to underarm 29 inch inseam

SIZE M 16 inches underarm to underarm 29 inch inseam